package com.bite.forum.controller;


import com.bite.forum.common.AppResult;
import com.bite.forum.common.ResultCode;
import com.bite.forum.config.AppConfig;
import com.bite.forum.model.Article;
import com.bite.forum.model.Board;
import com.bite.forum.model.User;
import com.bite.forum.services.IArticleService;
import com.bite.forum.services.IBoardService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import lombok.NonNull;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.ArrayList;
import java.util.List;

@Api(tags = "文章接口")
@Slf4j
@RestController
@RequestMapping("/article")
public class ArticleController {

    @Resource
    private IArticleService articleService;

    @Resource
    private IBoardService boardService;

    @ApiOperation("发布新帖")
    @PostMapping("/create")
    public AppResult create(HttpServletRequest request,
                            @ApiParam("板块Id") @RequestParam("boardId") @NonNull Long boardId,
                            @ApiParam("标题") @RequestParam("title") @NonNull String title,
                            @ApiParam("文章内容") @RequestParam("content") @NonNull String content){

        //校验用户是否禁言
        HttpSession session = request.getSession(false);
        User user = (User) session.getAttribute(AppConfig.USER_SESSION);
        if (user.getState() == 1){
            //用户已禁言
            return AppResult.failed(ResultCode.FAILED_USER_BANNED);
        }
        // 板块校验
        Board board = boardService.selectById(boardId.longValue());
        if (board == null || board.getDeleteState() ==1 || board.getState() == 1){
            log.warn(ResultCode.FAILED_BOARD_BANNED.toString());
            return AppResult.failed(ResultCode.FAILED_USER_BANNED);
        }

        //封装文章对象
        Article article = new Article();
        article.setTitle(title);
        article.setContent(content);
        article.setBoardId(boardId);
        article.setUserId(user.getId());
        //调用service
        articleService.create(article);
        //响应成功
        return AppResult.success();
    }

    @ApiOperation("获取帖子列表")
    @GetMapping("/getAllByBoardId")
    public AppResult<List<Article>> getAllByBoardId (@ApiParam("板块Id") @RequestParam(value = "boardId", required = false) Long boardId){

        //定义返回的集合
        List<Article> articles;
        if (boardId == null){
            //查询所有
             articles = articleService.selectAll();
        }else {
            articles = articleService.selectAllByBoardId(boardId);
        }
        //结果是否为空
        if (articles == null) {
            // 如果结果集为空，那么创建个空集合
            articles = new ArrayList<>();
        }
        //返回结果
        return AppResult.success(articles);
    }

    @ApiOperation("根据帖子Id获得详情")
    @GetMapping("/details")
    public AppResult<Article> getDetails (HttpServletRequest request,
            @ApiParam("帖子Id") @RequestParam("id") @NonNull Long id){
        //从session获取当前登陆的用户
        HttpSession session = request.getSession(false);
        User user = (User) session.getAttribute(AppConfig.USER_SESSION);

        //调用Service,获得帖子详情
        Article article = articleService.selectDetailById(id);
        // 判断是否为空
        if (article == null){
            //返回错误信息
            return AppResult.failed(ResultCode.FAILED_ARTICLE_NOT_EXISTS);
        }
        //判断当前用户是否为作者
        if (user.getId() == article.getUserId()) {
            //标识为作者
            article.setOwn(true);
        }

        return AppResult.success(article);
    }

    @ApiOperation("修改帖子内容")
    @PostMapping("/modify")
    public AppResult modify (HttpServletRequest request,
                             @ApiParam("帖子Id") @RequestParam("id") @NonNull Long id,
                             @ApiParam("帖子标题") @RequestParam("title") @NonNull String title,
                             @ApiParam("帖子正文") @RequestParam("content") @NonNull String content) {
        //获取当前登录的用户
        HttpSession session =request.getSession(false);
        User user= (User) session.getAttribute(AppConfig.USER_SESSION);
        //校验用户状态,是否禁言
        if (user.getState() == 1) {
            return AppResult.failed(ResultCode.FAILED_USER_BANNED);
        }
        //查询帖子详情
        Article article = articleService.selectById(id);
        if (article == null){
            //返回错误描述
            return AppResult.failed(ResultCode.FAILED_ARTICLE_NOT_EXISTS);
        }
        //判断用户是不是作者
        if (user.getId() != article.getUserId()){
            return AppResult.failed(ResultCode.FAILED_FORBIDDEN);
        }
        //判断帖子状态 - 已归档
        if (article.getState() ==1 || article.getDeleteState() == 1){
            return AppResult.failed(ResultCode.FAILED_ARTICLE_BANNED);
        }

        //调用Service
        articleService.modify(id,title,content);

        log.info("帖子更新成功， Article id="+id+"user id ="+user.getId());
        //返回正确结果
        return AppResult.success();
    }

    @ApiOperation("点赞")
    @PostMapping("/thumbsUp")
    public AppResult thumbsUp (HttpServletRequest request,
                               @ApiParam("帖子Id") @RequestParam("id") @NonNull Long id){
        //校验用户状态
        HttpSession session=request.getSession(false);
        User user = (User) session.getAttribute(AppConfig.USER_SESSION);
        //判断用户是否被禁言
        if (user.getState() == 1){
            return AppResult.failed(ResultCode.FAILED_USER_BANNED);
        }
        // 调用Service
        articleService.thumbsUpById(id);
        log.info("帖子点赞成功， Article id="+id+"user id ="+user.getId());
        return AppResult.success();
    }


    @ApiOperation("删除帖子")
    @PostMapping("/delete")
    public AppResult deleteById (HttpServletRequest request,
                                 @ApiParam("帖子Id") @RequestParam("id") @NonNull Long id){
        //校验用户状态
        HttpSession session=request.getSession(false);
        User user = (User) session.getAttribute(AppConfig.USER_SESSION);
        //判断用户是否被禁言
        if (user.getState() == 1){
            return AppResult.failed(ResultCode.FAILED_USER_BANNED);
        }
        //查看帖子详情
        Article article = articleService.selectById(id);
        //校验帖子状态
        if (article == null || article.getDeleteState() == 1){
            //帖子已经删除
            return AppResult.failed(ResultCode.FAILED_ARTICLE_NOT_EXISTS);
        }
        // 校验当前登录的用户是不是作者
        if (user.getId() != article.getUserId()){
            return AppResult.failed(ResultCode.FAILED_FORBIDDEN);
        }
        //调用Service
        articleService.deleteById(id);

        return AppResult.success();
    }

    @ApiOperation("获取用户的帖子列表")
    @GetMapping("/getAllByUserId")
    public AppResult getAllByUserId(HttpServletRequest request,
                                    @ApiParam("用户Id") @RequestParam(value = "userId",required = false) Long userId){
        //如果UserId为空，从session获取当前登录的用户Id
        if (userId == null){
            //获取session
            HttpSession session = request.getSession(false);
            //获取User对象
            User user=(User) session.getAttribute(AppConfig.USER_SESSION);
            userId=user.getId();
        }
        //调用Service
        List<Article> articles = articleService.selectByUserId(userId);
        //返回结果
        return AppResult.success(articles);
    }
}
